Testing instrument.



. PATENTETD JULY s1 1906. P. SGHAUFPLERF. TESTING INSTRUMENT.

APPLIOATION PILED'JUNIW. 1905.

nventor: I frvden'okflwzen rtyw.

Tn: nomus PETERS cm. vasnmarmv, oc. I

' NI D STATES No; ssaygeev s V I Specificationof Letter svratentgfl I c122;; all gwhgmliiti may con cern;

B i k QW i I E EP RIQK H- SQHA F: 11111113,: a v-citiz'en ofz theiUnitedStatee, fand a 1 revs iderit ipf the'city of New York, ir thec'p htyand-State of; N ew York; have inyerited oer;

l n nd r mplet k i eur yw nv n sm e atsep r y e mn. plgevements i i, aninstrument 91' toelfoli test 3 iffer m te i lfi; nd p rtic a y n-fwine-the re thibf- Paper r ed whe et ma er el:

he bjg totmy v nt is) ommy o Pw wea ri mn wh qh fl entand? i alccur ateasa testing devlcetbut also to. pro

duce e -inst1 1j1ment which is easily. handled is -.p 0 11tab1e, andwhich may be conveniently, applied te thegmaterial te .betested, whethertati n ry: r in mo ion .1 ma i e- B efiy, my -v nt w mpr 'a mpin mea soii vise b y which material to, be testedi slm din p sitiwy s ampi me ns1 pm?- ating in connection with a member for prodif cing, agtension-uponthe .pep'er and a ndise rupticn ftheregii,- said member .rbeing connected: a, suitable registering device; which 7 indicateg the teneionetwhich the disruptionL ak ep ec E01; $1111, cleag and eXect descriptionzofq or e form pi myinven-t'ion, which I ,at present, deemtmcetefficientand a preferable embddi: ment; reference may be had jtc-the followingsspecification-and to the accompanying draw; i in ri rm lwr i e 'whEigure ljis a; sideelevation partly insec-v,

than, of imgroved iinstru ierit; Fig 2 an ehd elevation t ereof Fig. 3,a: lofl gitudinal i sectional; gview of; one member of the clamp ingdevice, the tensicn member, and thereg t gim .1 Fi -4m Pl nviewfshowille the, face-0f; one: of the clamping j aws oi ,the']vise-=01 clamp Rig. 5 a tran'sveise sectional; view showing the gearingforqperating the, re lste ii g deyice. Fig.6 isz-a de ta hed d'eta'hView of, the m odified, form ofq tension-spying, fo iaope ating t the;tension member, Fig} 7 ,is';.l ag transverse sectional. view p12 one.end of; the tension d ewice.;,i1lu stra.ting its connectiontheregistering. means; and Fig. 8 ista toppla *vieygn of; the clamping 1device, Showing its? re;- lation t9 \the -tensionirier berl i Referringto the drawings,-the numeralsl and i 2 indicate.- two. of 3 the,component m'eme st iha dz l mpi Which in his n w lw the? m ltip yin fl iv ii te he i -m m elwen hei'emaftei' tq b'e memefully deeciibed j I h -Phe qt em f. h es sfiomy w SHi M he ii att f passest-a :p 11 n r\ 1=-; e1

nm v tension i J ben, h hzifiPtWidQd at theefid; lhichlre sts vi itlgithe recessfiiavitli J -13 and tatsas erl n isf p t yid d-w t withd I 91?tt ch dn ieiit nd l y; u waxd v mi;

he d mp ng plate m er end in aK- aL line withthe,i'QQ$S r=-0pening Thete l' 0 c p ngfi ls ngs 17 nd 0-.g xeplt iii di e.- R v y wi hfik x ma g-Q ei -i9fix Pre n i aidnasin "SQ- om ulr gl 01: me ing ini relation.to; bash ether," ,b ut ,allgwiilg rela tiveilengitudinal ,moye'memt,"th glfoxmngi idQSiQr lPlimgI' 2- he in e i lids f e yl ndr c l-t ssILPmY mwith a, screw-threaded pliig 23, which liini-telt m mt x heitopi fiiwh fl .xesednwa dly by the, spri g 1 6,; i the}. 0th id.pring-hem e ml edl w fi e ain he closed fgbfgth g lca sir g I cag g. l Qarr e i a eml wpr iesti g 1. 1 Pf fit mi tan e exwh ch cax ies-a z eotem n hei te ng {me n sm I hl l m:- s p isesttwb. p ate M1 265.betwniwliifi hi vM11, ige re-fi oge e eid ear mmi li n h ft; 3,1 carries atits outer en a fi ngenppindicating; hand- 29, a dapted to, cc iiiperate-wjthe scale no 30.} eprovidedoii the feceof {the platel. r

. .Mte liesl etheiex eiiw fi e ies- :2

jacent the outer end thereof are two pins 31, placed diametricallyopposite each other, said pins being of sufficient length to engage theslots 11 in the end of the outward .exten sion of the member 1 of thehand-clamp. A

plate 6 and is also pivoted at its inner end to the plate or jaw 6. Itwill be seen that this compression-spring 32 tends to keep the Gasing 17in its outer'position in relatlon to the casing 20. A spring 2,connected with the member 2, tends'also to keep the jaws 3 and 4 and theplates 5 and 6 separated.

-A special feature of the registering mechanism resides in thearrangement of its connections with the shaft 18. The gear 36,

. forming the first gear in the train 27, is pro vided with a shortstub-shaft 37, which enters'a sleeve or socket 38, carried on the end ofthe shaft 18. Said gear 36 is also provided with atransversely-projecting pin 39, which is adapted-to engage a lug orprojection. 40, carried on the sleeve 38. These parts form a clutchbetween the tension member and the registering mechanism. It will now beseen that as the shaft 18 rotates in one direction the lug will contactwith and carry along the pin 39, thereby rotating the gear 36 as long asthe rotation of the lug 40 continues. When the rotation of the shaft 18ceases and its motion commences in the opposite direction, the lug39will then remain at the limit of movement which it had in the oppositedirection without being affected by the reverse movement of the shaft 18and the corresponding lug 40. It will thus be seen that the limit ofoutward movement of the bar or lunger 12 in relation to the casing 17will e indicated by the hand 29, according to the scale 30 upon theplate'25.

'Since the movement of the plunger in relation to the casing 17 beforethe material bein tested is ruptured is comparatively smal the shaft 18will ordinarily be required to be rotated for less than one revolution.It is obvious, however, that if it is necessary to have the shaft 18rotate for more than one revolution any other suitable form of clutchmay be employed in order to have the registering device operatecorrectly, such as a pawl and ratchet-wheel.

The operation of my improved testing device isas follows: The piece ofpaper or other sheet material is placed between the corrugated jaws orclamping members 5 and 6, and pressure is then brought to bear upon themembers 1 and 2 of the hand-clamp. This causes the plates 5 and 6 tofirmly grip and hold the sheet material circumferentially at thatportion of the sheet material lying about the openings 7 and 8. Afurther movement of the members 1 and 2 of the hand-clamp toward eachother then causes the casing 17 to telescope with the casing 22, therebytending to force the upper end 13 of the plunger 12 against the sheetmaterial clamped between the jaws 5 and 6. The pressure transmitted fromthe member 1 throu h the spring 32 will cause the plates to grip thesheet material with constantly-increasing force as the tension on thepaper increases. However, the motion of the plunger 12 will be arrestedby the tension of said sheet material until the spring 16 has beensufficiently compressed to produce such a pressure upon the sheetmaterial to disrupt or tear the same. Owing to the fact that the plunger12 is arrested in its movement by the tension of the paper or sheetmaterial before disruption, while at the same time the casing 17continues in its inward movement, motion will be transmitted to theshaft 18, which will thereby cause the hand 29 to travel over the faceof the dial or scale 30. As soon as the disruption of the sheet materialtakes place the spring 16 will then cause the plunger 12 to be forced tothe limit of its upward movement, thus returning the shaft 18 to itsoriginal position by reversing its motion; but owing to the fact thatthe connection between the shaft 18 and gear 36 has been discontinuedsaid gear 36 is left in a position corresponding to the limit ofmovement of the lunger 12 in relation to the casing 17, whic will causethe hand 29 to indicate such limit of movement on the scale 30. It willthus be seen that the plunger 12 by the action of the spring 16 producesan increasing tension upon the sheet material clamped between the plates5 and 6 until such tension becomes great enough to disrupt or tear saidsheet material; but this point will immediately and automatically beclearly indicated upon the scale 30. The openings 7 and 8 in the plates5 and 6 are preferably made of a standard dimension or diameter, which Ihave adopted as a circle one inch in diameter. The semicircular head 13of the plunger 12 is also made of a standard diameter and radius ofcurvature. In Fig. 5 I have indicated a spring-pressed finger .41, whichrests against the periphery of the gear 36 for the purpose of preventinga too free movement of the gear 36 of the registering mechanism, thuspreventing the momentum of the parts when in motion from causing thehand 29 to register inaccurately. However, it is obvious that any otherfrictional device for this urpose maybe adopted.

In Fig. 6 I have sl iown a modified form of seesaw compression, springvor-wi springs sfor pressing: the plungerrl2; against the: sheetmaterial. This-modiifiedform consists of two springs :42; and343, to be:used I11--th'6 p1&()81OI is ring ;;1 6'.= T-he-springA'Z is much'we'aker:thant e-spring; 43-4 and being. somewhat longer willi actquntil17116551301)? 15. hasv had suflicient movement itocontact awithi ;.theend of i the spring 43, aiiter r whichfurtherimovement of thefspringrl55wi-l1 sbee against; the combined, pressure" of the springsAZ and 43This arrangement: ;is- :for

the purpose of providing a delifca-te tension, for very thin paper orother .sheetmaterial, which tension is increased {when thevmove:

rg mentiohthecasingr 17 has reached a certain;

' the spirit and scopeof myinventionm Eoninstance, .theregisteringmechanism may be inclosed in any suitable casing andxmaybe placed at anydesirable point whichlwillpermit the requisite operative connection withthe plun er or bar of the tension member; nor do I wis to be understoodas being limited to the particular form of clamping members" for thesheet material, the present form at this time being preferable, as thesame clamps the sheet material in all directions circumferentially aboutthe standard-opening and prevents the paper or other sheet material fromstarting to tear at its edge, which all sheet material has a tendency'todo, thereby decreasing the accuracy of the measurement.

The means for determining and producing the pressure upon the materialbeing tested may consist of different mechanical devices for producingthe same result, such as by operating the pressure member by air orother fluid pressure in connection with a suitable indicator for thesame.

Having thus described these forms of my invention, what I claim, anddesire to protect by Letters Patent, is

1. In a testing instrument, a hand-clamp having annular clamping-jaws, atension device, said hand-clamp being connected with said tensiondeviceso that a single movement of said clamp will operate said jaws andsaid tension device, and means for registering the amount of pressureproduced by said tension device.

2. In a testing instrument, a hand-clamp having annular clamping-jaws, atension device acting within the openings in said jaws and carried byone of said jaws, said hand clamp being connected with said tensiondevice, said device comprising a spring and means for-yindicating thepressure-produced bysaid tension device. H v

{ 32. a}: testing instrument, the combina hon-comprisingai'portableghand-clamp, have 1 ing annular rj aws," astension device, aspring; connecting theipartsofg said clampand acting; toenormally keepsaidgjaws; open and 1 said i ,tGIISIOIIdGVI'CG? retracted; and :meansior-rege istering the: amount 10f pressure, produced bysaid tension device.

4: A testing instrument a of; the class described, consisting-of ahand-tool comprising d in onehand and carrying annular clamp,- ing jaws,a l tension device connected with Q, ones of said-:memb'ers andincluding a-- compression-s ring, and means for registering the amount=0 pressureiproduced by said tension- (device. s 5"... Atesting-instrument; of 'thei-classgide scribed, consisting ofa,-,ihandtool comprising opposed soperatingrmembers adapted to be."

fheldviir onerh'and and having clamping-j aws,-

a-tension member, a, casing carried; by one: of said jaws, throughwhich; saidmem-b'er passes, toiform'. asgu-ideior the: endtllGI'BOfyflmOOilGd; spring within said casing and surrounding saidmember, and means fon'registeringthe the amount of pressure produced bysaid tension member. a

7. In a testing instrument, a clamp, having annular clam ing-jaws,telescopic casings carried by said 0 amp, a tension member locatedWithin said casings, a yielding connection between said member and oneof said casings, said clamp being connected With said latter casing, aspring for keeping said jaws separated and said casings extended, andmeans for registering the amount of pressure roduced by said tensionmember.

8. In a testing instrument, annular clamping-jaws, a slidable casingcarried by one of said jaws, a tension member located transversely ofsaid jaws and provided with a gear-rack upon its outer end, a pinionmeshand operating to produce a pressure upon sheet material clampedbetween said clamping members, said tension device being operativelyconnected with a hand-engaging portion of said clamp, registeringmechanism connected with said tension device for-indicating the greatestamount of pressure produced thereby upon the sheet material, and aspring tending to keep said tension device extended outwardly.

' 10. In'a testing instrument, a clamp having a pair of clamping-jaws,adapted to hold sheet material rigidly in position, a movable member,carried by one of said jaws and adapted to produce pressure upon saidsheet material, a pair of relatively slidable guides carried by saidjaw, one of said guides being operatively connected with said movablemember through the interposition of a compression-spring, a shaftcarried by the latter guide, re istering mechanism connected with saidsha t, and operative connections between said shaft and said movablepressure member for causing said indicating mechanism to indicate thegreatest tension of said spridng during the relative movement of said g11. In a testing instrument, a pair of clamp-operating members, movabletoward and from each other in opposite directions,

clamping-j aws connected with said members, a-tension device alsoconnected with one of said members for producing a tension upon thematerial clamped between said jaws, a spring connecting one of saidclamp-operating members with one of said jaws to cause said tensiondevice to be retracted, said clamp-operating member also acting to causethe tension member to bear against the material being tested, and a reistering device to indicate the amount of the tension produced on saidmaterial.

12. In a testing instrument, a pair of clamping-jaws, having centralopenings or recesses therein, a pair of clamp-operating membersconnected with said jaws, a bar or plunger for producing pressure uponmaterial clamped between said jaws and within said openings, one of saidclamp-operating members being extended and connected with said bar orplunger, said connection comprising a spring for producing variablepressure upon said bar or plunger, and means for indicating the tensionof said spring.

In witness whereof I have signed my name this 7th day of June, 1905.

FREDERICK H. SCHAUFFLER.

In presence of- WALTER S. JoNEs,

EDW. W. VAILL, Jr.

